private function dependencies(CacheAbstract $cache)
{
$this->assertFalse($cache->appendCallback('cacheCallback'));
// not in loop
$cache->recursivestart('parent', 1);
echo 'parent start/';
$this->assertFalse($cache->appendCallback('nawreanaweroi'));
// invalid
$cache->appendCallback('cacheCallback');
$cache->recursivestart('child', 2);
echo '|child first|';
$cache->recursiveend(false);
echo 'parent end/';
$cache->recursiveend(false);
$data = $cache->get('child', 2);
$cachedata = CacheData::unserialize($data);
$this->assertEquals('|child first|', $cachedata->stringify($cache));
$data = $cache->get('parent', 1);
$cachedata = CacheData::unserialize($data);
$this->assertEquals('parent start/aaaa|child first|parent end/', $cachedata->stringify($cache));
$cache->delete('child', 2);
$cache->recursivestart('child', 2);
echo '|child second|';
$cache->recursiveend(false);
$data = $cache->get('child', 2);
$cachedata = CacheData::unserialize($data);
$this->assertEquals('|child second|', $cachedata->stringify($cache));
$data = $cache->get('parent', 1);
$cachedata = CacheData::unserialize($data);
$this->assertEquals('parent start/bbbb|child second|parent end/', $cachedata->stringify($cache));
}